package web.controllers;

import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import modelovectorial.core.SearchEngine;
import modelovectorial.core.SuggestResult;

/**
 * @project DLC Final / UTN FRC 2013
 * @date Febrero de 2013
 *
 * @author Gonzalo Arribere
 * @author Gustavo Morales
 * @author Pablo Moreno
 */
public class Suggestions extends HttpServlet {
   
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/xml;charset=UTF-8");

        SearchEngine se = new SearchEngine ();

        String pQuery = request.getParameter ("q");
        Integer resultsCount = new Integer (0);

        if (pQuery != null)
        {
            SuggestResult result = se.suggest (pQuery);
            resultsCount = new Integer (result.results ());

            if (result.results () > 0)
            {
                request.setAttribute ("suggestions", result.getDocuments ());
            }
        }
        RequestDispatcher dispatcher = request.getRequestDispatcher (SitePages.SUGGESTIONS_XML);
        dispatcher.forward(request, response);
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
